You must be dyno-ing an OBS truck. You're right, there is no duty cycle percentage for the torque converter clutch lockup with those trucks because the TCC solenoid and associated valving is a simple on/off setup. If it's still not working, I don't know what to suggest since that would be the most logical step to take.......I've not had a need to do anything like that yet.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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Mon, October 12th, 2009, 10:02 AM
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